From last night I'm feeling pain in my left side of chest. I'm mean under ribs. I took aciloc tablet before having dinner. I was also burping. But the pain continuous whole night and I was not able to sleep on my left side. Sometime I was feeling pain in my whole left side chest n abdomen. I took another aciloc in early morning also. But still it's not working. Wht has happened to me. Is it serious. I am also having very frequent and severe headache 4 to 5 times a month. May be due to acidity. Please help me wht shud I do. Ll b v thankful for your advice.